I have start to use the notebook with internal original Sony battery. Time for use it in the range between 1hour or 1.5. Well i have other notebook and battery running for more of 3 hour. I am also using vaio manager to reduce at munimun all necessary from display etc.. Some one as similar result because meaby we can change this type of battery with other that can give much time power.
Thanks.
Regards
Emy